ACT photosynthetic exciton transfer Answer YES for the tuned antenna complex. NO for the detuned, strongly decohered contrast complex. Reason Why The tuned complex can sample exciton pathways coherently, use vibronically assisted transfer, and exploit short-lived quantum assistance along a downhill route to the reaction center. That makes efficient exciton transfer and reaction-center delivery possible in this case. The detuned contrast complex lacks the same alignment: coherent pathway sampling is blocked, vibronic assistance is unavailable, and the energy landscape is mismatched, so efficient reaction-center delivery is not possible in the same operating picture. Check C1 OK - the tuned complex can sample exciton pathways coherently C2 OK - the tuned complex can use vibronically assisted transfer C3 OK - short-lived quantum assistance is enough in the tuned downhill regime C4 OK - efficient exciton transfer is possible in the tuned complex C5 OK - the tuned complex can deliver excitation to the reaction center C6 OK - the detuned complex cannot sample pathways coherently C7 OK - the detuned complex cannot use vibronically assisted transfer C8 OK - the detuned complex cannot achieve directed reaction-center transfer C9 OK - the detuned complex cannot achieve efficient exciton transfer C10 OK - the detuned complex cannot deliver excitation efficiently to the reaction center